Chapter 6
6 - 2
Additional equipment for DC power
In addition to the equipment supplied with the standard AC platform, the
DC platform requires some additional equipment for installation and wiring.
The following additional equipment is supplied with the platform.
• Two-ring grounding terminal lug, 5/8 in. (1.59 cm) holes on 1.25 in.
(3.18 cm) centers
• Two 5/16-18 Keps nuts for the ground
• Two terminal block plugs for attaching leads to the platform
There are some other pieces of equipment you may need that you need to
supply. You need to supply the following additional equipment.
• Rack-mounted power disconnect
• 2 AWG copper ground wire
• Minimum 8 AWG copper wiring leads for four power supplies
• Molex crimping tool for the ground wire
• Screwdriver, #2 Phillips head or flathead
Grounding the platform
After the platform is installed in a rack, you can ground the platform.
Each blade has a metal plate that is screwed to the electronics in multiple
places to the ground plane of the board. The front plate of the blade is also
screwed to this plate when you tighten the screw lock assemblies to the
chassis. The entire system is directly connected to the metal chassis, and the
ground connection is also directly connected to the chassis.
Do not secure multiple bonding or grounding connectors with the same bolt.
The grounding connectors do not need to be removed to perform service or
installation procedures. You can connect other bonding or grounding
conductors to a grounding connector provided a reliable bond between the
connector and the equipment is not disturbed during installation, service, or
maintenance of the platform.
The VIPRION platform must be grounded to a common bonding network
(CBN).
All copper grounding cable compression-type terminal lugs used for
grounding must meet all appropriate UL standards.
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